Question

How many types of cement are there based on the ability to set in presence of water?

(a) 2

(b) 3

(c) 4

(d) 5

This question was posed to me during an internship interview.

This intriguing question originated from Types of Cement and Uses in portion Materials for Construction of Basic Civil Engineering

Answer 1

Correct answer is (a) 2

For explanation I would say: The 2 types are hydraulic and non-hydraulic cement.  Hydraulic cement sets and becomes adhesive due to reaction with water.  Non-hydraulic cement does not set under-water or in wet conditions.